He used to go to the gym and be really healthy but now he has really let himself go. He drinks beer all the time and eats like crap and he is really putting on the pounds. I try and encourage him to come to the gym with me etc and he just won't.

Although I'm more attracted to him when he is fit, healthy, and looking after himself, I am more worried about how unhealthy he is becoming.

Like I said, I try and encourage him to lead a healthy lifestyle with me but he doesn't. I don't ever call him fat and dont want to be too strong about it. Should I be more direct with him or just let him live his life as he pleases?